forked from kidgrow-microservices-platform

zhaoxiaohao
2020-07-17 5f69a549add739b190f46ba7d035e2fe31390e01
kidgrow-business/kidgrow-filecenter/kidgrow-filecenter-biz/src/main/java/com/kidgrow/filecenter/service/impl/AbstractIFileService.java
@@ -1,6 +1,7 @@
package com.kidgrow.filecenter.service.impl;
import cn.hutool.core.util.IdUtil;
import com.aliyun.oss.model.OSSObject;
import com.aliyun.oss.model.ObjectMetadata;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
@@ -20,7 +21,6 @@
import org.apache.commons.collections4.MapUtils;
import org.springframework.web.multipart.MultipartFile;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@@ -95,6 +95,7 @@
    protected abstract void uploadFile(MultipartFile file, FileInfo fileInfo) throws Exception;
    protected abstract void fileUpLoadOss(FileInfo fileInfo,String newFilePath, InputStream fileStream);
    protected abstract String FilePath(String imgType,String folderByDate);
    protected abstract OSSObject down(String url);
    /**
     * 删除文件
@@ -219,29 +220,41 @@
    }
    @Override
    public ResultBody baseDownLoad(Map<String, Object> map) {
    public ResultBody baseDownLoad(Map<String, Object> map) throws Exception {
        List<FileInfo> fileInfos = baseMapper.selectByMap(map);
        if(fileInfos.size()>0){
            FileInfo fileInfo = fileInfos.get(0);
            InputStream in = null;
            byte[] data = null;
            //读取图片字节数组
            try{
                in = new FileInputStream(fileInfo.getUrl());
                data = new byte[in.available()];
                in.read(data);
                in.close();
            }catch (IOException e){
                e.printStackTrace();
            }
            //对字节数组Base64编码
            BASE64Encoder encoder = new BASE64Encoder();
            OSSObject down1 = this.down(fileInfo.getUrl().replace("https://kidgrow.oss-accelerate.aliyuncs.com/",""));
            InputStream objectContent = down1.getObjectContent();
            //返回Base64编码过的字节数组字符串
            String encode = encoder.encode(data);
            byte[] data = null;
            // 读取图片字节数组
            try {
                ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
                byte[] buff = new byte[100];
                int rc = 0;
                while ((rc = objectContent.read(buff, 0, 100)) > 0) {
                    swapStream.write(buff, 0, rc);
                }
                data = swapStream.toByteArray();
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                if (objectContent != null) {
                    try {
                        objectContent.close();
                        down1.close();
                    } catch (IOException e) {
                        throw new Exception("输入流关闭异常");
                    }
                }
            }
            String encode="data:"+fileInfo.getContentType()+";base64,"+Base64.getEncoder().encodeToString(data);
            return ResultBody.ok().data(encode);
        }else {
            return ResultBody.failed("获取数据失败");
        }
    }
}